Restoring a Previously Purchased In-App Upgrade (iOS - version 4)

I've previously purchased my in-app upgrade in
Twitterrific 4, but need it again and/or want to apply it to
another device. How do I do this?

If you've already previously purchased the in-app upgrade in
version 4 of Twitterrific, simply tap the Restore Purchase button
and when prompted, enter the same iTunes account information you
previously used to purchase your upgrade. iTunes will recognize
that you already own the package and let you reinstall the update
free of charge. This also goes for restoring your upgrade on one
mobile platform, like iPad and needing to input it in another, like
iPhone.

If you need to redownload version 4 of Twitterrific itself, you
can find it on the purchases tab on the App Store for the iTunes
account you used to download it originally. If you have not
previously purchased the in-app upgrade in Twitterrific version 4,
then unfortunately that upgrade is no longer for sale.